<?php
	$br="<br/>";
	echo "null==0 : ";
	echo var_dump(null==0);
	echo $br;
	
	echo "null=='' : ";
	echo var_dump(null=='');
	echo $br;
	
	echo "null==false : ";
	echo var_dump(null==false);
	echo $br;
	
	echo "null===0 : ";
	echo var_dump(null===0);
	echo $br;
	
	echo "null==='' : ";
	echo var_dump(null==='');
	echo $br;
	
	echo "null===false : ";
	echo var_dump(null===false);
	echo $br;
	
?>